hn-8.x-1.x-dev/modules/hn_extended_view_serializer/hn_extended_view_serializer.services.yml

services:
  serializer.normalizer.file:
    class: Drupal\hn_extended_view_serializer\Normalizer\TaxonomyIndexTidNormalizer
    tags:
      - name: normalizer
        priority: 20